Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

please answer fast and give a detailed solution too.

please answer fast and give a detailed solution too.

Question Image
Grade:11

1 Answers

Ritesh Khatri
76 Points
3 years ago
Using Identity Sinx = Cos(90-x) we can write
(cos20 – cos(90-20))/(cos20 + cos(90-20))
 
which is equal to
(cos20 – cos(70))/(cos20 + cos(70))
 
Now using transformation formula we get
 
[-2Sin45Sin(-25)]/[2cos45Cos25]
 
which gives Tan25

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free